255803904 has 120 divisors (see below), whose sum is σ = 756021552. Its totient is φ = 83220480.

The previous prime is 255803893. The next prime is 255803929. The reversal of 255803904 is 409308552.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197499 + ... + 198789.

Almost surely, 2^255803904 is an apocalyptic number.

255803904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255803904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378010776).

255803904 is an abundant number, since it is smaller than the sum of its proper divisors (500217648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255803904 is a wasteful number, since it uses less digits than its factorization.

255803904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 255803904 is about 15993.8708260383. The cubic root of 255803904 is about 634.7982528126.

The spelling of 255803904 in words is "two hundred fifty-five million, eight hundred three thousand, nine hundred four".